Smart battery

Abstract

The present disclosure relates to a smart battery. The smart battery includes a battery shell, layered cells, a positive electrode, a negative electrode, an embedded multi-source sensor group and an intelligent chip. The smart battery can detect the temperature and the pressure of the core of the battery and the current of the battery in real time by using the intelligent chip and the embedded multi-source sensor group, thereby realizing a real-time monitoring of the working state and safety state of the battery, and improving a safety and the reliability of the battery on the basis of realizing the self-sensing function of the battery. The modification to the conventional battery structure by adding the intelligent chip and the embedded multi-source sensor group makes up the gap in research and development, manufacturing and production of the smart battery on the premise of ensuring that the battery volume remains unchanged.

What is claimed is: 
     
       1. A smart battery, comprising: a battery shell, layered cells, an embedded multi-source sensor group, an intelligent chip, a positive electrode and a negative electrode; wherein
 the layered cells are arranged in the embedded multi-source sensor group; the intelligent chip is arranged between the positive electrode and the negative electrode; the battery shell wraps the embedded multi-source sensor group, the intelligent chip, the positive electrode and the negative electrode, and through holes for receiving the positive electrode, the negative electrode and a data interface of the intelligent chip are formed on the battery shell; 
 the positive electrode is electrically connected with a positive electrode of the layered cells; the negative electrode is electrically connected with a negative electrode of the layered cells; 
 the embedded multi-source sensor group is electrically connected with the intelligent chip; the embedded multi-source sensor group is configured to detect a temperature and a pressure of a core of the smart battery and a current inside the smart battery; the intelligent chip is configured to detect a working state of the smart battery in real time according to the temperature and the pressure of the core of the smart battery and the current inside the smart battery; 
 wherein 
 the embedded multi-source sensor group comprises a composite sensor and a Hall current sensor; the composite sensor is embedded between the layered cells, and the layered cells are arranged in the Hall current sensor; 
 the composite sensor comprises a thin-film temperature sensor, a fiber Bragg grating, a first backplane and a second backplane; 
 the fiber Bragg grating is embedded in the first backplane and the second backplane; 
 and grooves for receiving the fiber Bragg grating and the thin-film temperature sensor are formed in each of the first backplane and the second backplane; 
 the thin-film temperature sensor is arranged between the first backplane and the second backplane; and 
 the fiber Bragg grating and the thin-film temperature sensor are both connected with the intelligent chip; the fiber Bragg grating is configured to detect the pressure of the core of the smart battery; and the thin-film temperature sensor is configured to detect the temperature of the core of the smart battery. 
 
     
     
       2. The smart battery of  claim 1 , wherein the Hall current sensor comprises a casing, a plurality of annular magnetic belts and Hall sensors, wherein
 a number of the Hall sensors is same as that of the annular magnetic belts; 
 a hollow structure is formed on one side of the casing; the annular magnetic belts are circumferentially attached to an outside of the casing, the hollow structure is formed in a center of a gap between a first end and a second end of the annular magnetic belts attached to the outside of the casing, and the Hall sensors are arranged in the hollow structure; and 
 the layered cells are arranged inside the casing. 
 
     
     
       3. The smart battery of  claim 1 , wherein the intelligent chip comprises: a Hall current processing unit, a composite sensing modulation and demodulation unit and a central processing unit; wherein
 the Hall current processing unit is electrically connected with the Hall current sensor; the composite sensing modulation and demodulation unit is electrically connected with the composite sensor; the Hall current processing unit and the composite sensing modulation and demodulation unit are both electrically connected with the central processing unit; and 
 the Hall current processing unit is configured to demodulate a sensing signal obtained by the Hall current sensor to obtain the current of the smart battery; the composite sensing modulation and demodulation unit is configured to demodulate a change of a central wavelength of the fiber Bragg grating to obtain the pressure of the core of the smart battery and to demodulate a virtual voltage signal obtained by the thin-film temperature sensor to obtain the temperature of the core of the smart battery; the central processing unit is loaded with a battery working state management algorithm for determining the battery working state and a multi-dimensional safety signal warning logic algorithm; and the central processing unit determines the working state and a safety state of the smart battery according to signals obtained by the Hall current processing unit and the composite sensing modulation and demodulation unit. 
 
     
     
       4. The smart battery of  claim 3 , wherein the intelligent chip further comprises a chip substrate, an ultrasonic sensor and a voltage sensor; wherein
 the ultrasonic sensor is connected with the central processing unit; the voltage sensor is connected with the positive electrode, the negative electrode and the central processing unit; the voltage sensor is configured to detect a voltage change of the smart battery; and the ultrasonic sensor is configured to detect a structural state of the smart battery; and 
 a wireless transmission unit, the Hall current processing unit, the composite sensing modulation and demodulation unit, the central processing unit, the ultrasonic sensor and the voltage sensor are all fixedly arranged on the chip substrate. 
 
     
     
       5. The smart battery of  claim 3 , wherein the intelligent chip further comprises a wireless transmission unit; wherein the central processing unit is connected with the wireless transmission unit; and the wireless transmission unit is configured to realize information interaction between the central processing unit and a vehicle management system and/or between the central processing unit and an internet cloud. 
     
     
       6. The smart battery according to  claim 1 , wherein the battery shell is provided with an intelligent chip groove, a battery groove, a positive electrode groove and a negative electrode groove; wherein
 the intelligent chip groove, the positive electrode groove and the negative electrode groove are all arranged above the battery groove, and the positive electrode groove and the negative electrode groove are symmetrically arranged with respect to the intelligent chip groove; and 
 the intelligent chip groove is configured to receive the intelligent chip; the battery groove is configured to receive the layered cells and the embedded multi-source sensor group; the positive electrode groove is configured to receive the positive electrode; and 
 the negative electrode groove is configured to receive the negative electrode. 
 
     
     
       7. The smart battery according to  claim 6 , wherein the battery shell is further provided with an explosion-proof valve; wherein
 the explosion-proof valve is positioned between the intelligent chip groove and the battery groove. 
 
     
     
       8. The smart battery of  claim 1 , wherein the layered cells are layered cells of a layered lithium ion battery.